The calculated bending stresses are shown in the base of rail at speeds up to 75 mph for six rail sections. Stresses for sections of other weights may be approximated by interpolation. The recommended acceptable working stress which should not result in rail bending or breakage is also shown on this chart for (a) light rail in branch lines where speeds will not exceed 35 mph; (b) jointed rail in main line; and (c) continuous welded rail in main line. It will be noted that no difficulty is anticipated with rail bending or breakage on branch lines at speeds up to 35 mph with rail of 80 lb. weight or heavier; or main line jointed rail at speeds up to 60 mph with 100 lb. rail or heavier; and on main line jointed rail at speeds up to 75 mph or continuous welded rail at speeds up to 70 mph with 115 rail or heavier. The above assumes a standard of maintenance of line and surface to accommodate such speeds. Establishment of the acceptable working stress is a matter of judgment and evaluation of the conditions on an individual railway.

  • Supplemental Notes:
    • This abstract is also contained in "A Bibliography on the Design and Performance of Rail Track Structures", September 1974, RRIS #072794, which was prepared for the Urban Mass Transportation Administration.
  • Corporate Authors:

    Association of American Railroads Research Center

    3140 South Federal Street
    Chicago, IL  United States  60616
  • Authors:
    • MAGEE, G M
  • Publication Date: 1965-4

Subject/Index Terms

Filing Info

  • Accession Number: 00072843
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 11 1976 12:00AM